Status: 5.6.1 Error

[notx]

Hello,

I have a relay server (windows 2003) which is getting bounced from the Windows 2003R2 server running the current version of plesk. The error is as follows:

Reporting-MTA: dns;2k3s-254-46.websowngroup.websown.aspadmin.net
Received-From-MTA: dns;newsletter.workcompcentral.com
Arrival-Date: Mon, 29 Sep 2008 03:35:00 -0700

Original-Recipient: rfc822;[email protected]
Final-Recipient: rfc822;[email protected]
Action: failed
Status: 5.6.1
Diagnostic-Code: smtp;554 5.6.1 Body type not supported by Remote Host

Any ideas on how to fix this?